Q2 of 31 Page 259

Ekta earns Rs 1500 in 10 days. How much will she earn in 30 days?

It is given in the question that,


Money earned in 10 days = Rs. 1500


Therefore,


Money earned in 1 day = = Rs. 150


Hence,


Money earned in 30 days = 150 × 30 = Rs. 4500


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4

Determine if the follow ratios form a proportion. Also, write the middle terms and extreme terms where the ratio forms a proportion.

(a) 25 cm : 1 m and Rs. 40 : Rs. 160


(b) 39 litres : 65 litres and 6 bottles : 10 bottles


(c) 2 kg : 80 kg and 25 g : 625 g


(d) 200 mil : 2.5 litres and Rs. 4 : Rs. 50

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If the cost of 7m of cloth is Rs. 294, find the cost of 5 m of cloth.

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If it has rained 276 mm in the last 3 days, how many cm of rain will fall in one full week (7 days)? Assume that the rain continues to fall at the same rate.

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Cost of 5 kg of wheat is Rs. 30.50.

(a) What will be the cost of 8 kg of wheat?


(b) What quantity of wheat can be purchased in Rs. 61?